使用ajax调用来调用C＃[WebMethod]函数

Question

I'm trying to call a function from a C# file in my custom module using an ajax call. I have a .js file that uses an ajax call to whitelist.aspx/isValidURL (I've also tried whitelist.cs as the file extension and url without any luck). I need to access the server method isValidURL, passing in the requested url, to see if the requested url is in a list of valid URLs. If the requested url is in the list then I want to return true to the javascript file and otherwise return false. Is this even possible? Below is the code I have thusfar:

Javascript code:

$(document).ready(function () {
    function getUrlVars() {
        var vars = {};
        var parts = window.location.href.replace(/[?&]+([^=&]+)=([^&]*)/gi, function (m, key, value) {
            vars[key] = value;
        });
        return vars;
    }

    if (getUrlVars()["url"].indexOf("http") > -1) {
        var urlArray = getUrlVars()["url"].split('/');
        //var protocol = urlArray[0];
        var transferurl = urlArray[2];
    } else {
        var transferurl = getUrlVars()["url"];
    }

    $.ajax({
        type: "GET",
        url: "whitelist.aspx/isValidURL",
        data: {url:transferurl},
        contentType: "application/json; charset=utf-8",
        dataType: "json"
    }).done(function (data) {
        if (data) {
            //Redirect to the requested url because it was a valid url in the whitelist
            setTimeout(function () { window.location.assign(transferurl); }, 5000);
        } else {
            //Don't redirect to the requested url because it wasn't a valid url in the whitelist
        }
    }).fail(function () {
        //Don't redirect to the requested url because there was an error looking it up in the whitelist
    });
});

C# Code:

public class whitelist
    {
        [WebMethod]
        public static bool isValidURL(string requestedURL)
        {
            //Create a list of strings to contain all the "valid" URLs
            var whiteList = new List<string>();
            //Add URLs to the list
            whiteList.Add("www.google.com");

            foreach (string validURL in whiteList)
            {
                if (requestedURL == validURL)
                {
                    return true;
                }
            }

            return false;

        }
    }

Answer 1

1. Create a new ASPX page named whitelist.aspx and put your webmethod in that.

2. stringify() your parameters and use POST instead of GET:

     $.ajax({ type: "POST", data: JSON.stringify({ requestedURL: transferurl }), ... 

3. The return value may be wrapped, in which case you will access it as follows:

   .done(function (data) { if (data.d) { ... } })